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src/cpu/x86/vm/interpreterRT_x86_32.cpp@8b46b0196eb0 (annotated)

src/cpu/x86/vm/interpreterRT_x86_32.cpp

Fri, 25 Jan 2013 10:04:08 -0500

author

zgu

date

Fri, 25 Jan 2013 10:04:08 -0500

changeset 4492

8b46b0196eb0

parent 4037

da91efe96a93

child 6876

710a3c8b516e

permissions

-rw-r--r--

8000692: Remove old KERNEL code
Summary: Removed depreciated kernel VM source code from hotspot VM
Reviewed-by: dholmes, acorn

duke@435	1	/*
coleenp@4037	2	* Copyright (c) 1998, 2012, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#include "precompiled.hpp"
stefank@2314	26	#include "interpreter/interpreter.hpp"
stefank@2314	27	#include "interpreter/interpreterRuntime.hpp"
stefank@2314	28	#include "memory/allocation.inline.hpp"
stefank@2314	29	#include "memory/universe.inline.hpp"
coleenp@4037	30	#include "oops/method.hpp"
stefank@2314	31	#include "oops/oop.inline.hpp"
stefank@2314	32	#include "runtime/handles.inline.hpp"
stefank@2314	33	#include "runtime/icache.hpp"
stefank@2314	34	#include "runtime/interfaceSupport.hpp"
stefank@2314	35	#include "runtime/signature.hpp"
duke@435	36
duke@435	37
duke@435	38	#define __ _masm->
duke@435	39
duke@435	40
duke@435	41	// Implementation of SignatureHandlerGenerator
duke@435	42	void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
duke@435	43	move(offset(), jni_offset() + 1);
duke@435	44	}
duke@435	45
bobv@2036	46	void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
bobv@2036	47	move(offset(), jni_offset() + 1);
bobv@2036	48	}
bobv@2036	49
duke@435	50	void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
duke@435	51	move(offset(), jni_offset() + 2);
duke@435	52	move(offset() + 1, jni_offset() + 1);
duke@435	53	}
duke@435	54
duke@435	55	void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
duke@435	56	box (offset(), jni_offset() + 1);
duke@435	57	}
duke@435	58
duke@435	59	void InterpreterRuntime::SignatureHandlerGenerator::move(int from_offset, int to_offset) {
duke@435	60	__ movl(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
duke@435	61	__ movl(Address(to(), to_offset * wordSize), temp());
duke@435	62	}
duke@435	63
duke@435	64
duke@435	65	void InterpreterRuntime::SignatureHandlerGenerator::box(int from_offset, int to_offset) {
never@739	66	__ lea(temp(), Address(from(), Interpreter::local_offset_in_bytes(from_offset)));
never@739	67	__ cmpptr(Address(from(), Interpreter::local_offset_in_bytes(from_offset)), (int32_t)NULL_WORD); // do not use temp() to avoid AGI
duke@435	68	Label L;
duke@435	69	__ jcc(Assembler::notZero, L);
xlu@947	70	__ movptr(temp(), NULL_WORD);
duke@435	71	__ bind(L);
never@739	72	__ movptr(Address(to(), to_offset * wordSize), temp());
duke@435	73	}
duke@435	74
duke@435	75
duke@435	76	void InterpreterRuntime::SignatureHandlerGenerator::generate( uint64_t fingerprint) {
duke@435	77	// generate code to handle arguments
duke@435	78	iterate(fingerprint);
duke@435	79	// return result handler
duke@435	80	__ lea(rax,
duke@435	81	ExternalAddress((address)Interpreter::result_handler(method()->result_type())));
duke@435	82	// return
duke@435	83	__ ret(0);
duke@435	84	__ flush();
duke@435	85	}
duke@435	86
duke@435	87
duke@435	88	Register InterpreterRuntime::SignatureHandlerGenerator::from() { return rdi; }
duke@435	89	Register InterpreterRuntime::SignatureHandlerGenerator::to() { return rsp; }
duke@435	90	Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rcx; }
duke@435	91
duke@435	92
duke@435	93	// Implementation of SignatureHandlerLibrary
duke@435	94
duke@435	95	void SignatureHandlerLibrary::pd_set_handler(address handler) {}
duke@435	96
duke@435	97	class SlowSignatureHandler: public NativeSignatureIterator {
duke@435	98	private:
duke@435	99	address _from;
duke@435	100	intptr_t* _to;
duke@435	101
duke@435	102	virtual void pass_int() {
duke@435	103	*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
twisti@1861	104	_from -= Interpreter::stackElementSize;
duke@435	105	}
duke@435	106
bobv@2036	107	virtual void pass_float() {
bobv@2036	108	*_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
bobv@2036	109	_from -= Interpreter::stackElementSize;
bobv@2036	110	}
bobv@2036	111
duke@435	112	virtual void pass_long() {
duke@435	113	_to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
duke@435	114	_to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
duke@435	115	_to += 2;
twisti@1861	116	_from -= 2*Interpreter::stackElementSize;
duke@435	117	}
duke@435	118
duke@435	119	virtual void pass_object() {
duke@435	120	// pass address of from
duke@435	121	intptr_t from_addr = (intptr_t)(_from + Interpreter::local_offset_in_bytes(0));
xlu@968	122	*_to++ = (*(intptr_t*)from_addr == 0) ? NULL_WORD : from_addr;
twisti@1861	123	_from -= Interpreter::stackElementSize;
duke@435	124	}
duke@435	125
duke@435	126	public:
duke@435	127	SlowSignatureHandler(methodHandle method, address from, intptr_t* to) :
duke@435	128	NativeSignatureIterator(method) {
duke@435	129	_from = from;
duke@435	130	_to = to + (is_static() ? 2 : 1);
duke@435	131	}
duke@435	132	};
duke@435	133
coleenp@4037	134	IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(JavaThread* thread, Method* method, intptr_t* from, intptr_t* to))
coleenp@4037	135	methodHandle m(thread, (Method*)method);
duke@435	136	assert(m->is_native(), "sanity check");
duke@435	137	// handle arguments
duke@435	138	SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
duke@435	139	// return result handler
duke@435	140	return Interpreter::result_handler(m->result_type());
duke@435	141	IRT_END